Across
- 3. REDDISH-BROWN SUBSTANCE WHEN IRON IS EXPOSED TO MOIST AIR
- 6. ANOTHER NAME FOR CHEMICAL CHANGE
- 7. WHEN A COMPOUND BREAKS UP INTO 2 OR MORE SUBSTANCES
- 8. REACTIONS DURING WHICH HEAT IS RELEASED
- 9. SUBSTANCE UNDERGOES CHANGE ONLY IN PHYSICAL PROPERTIES
- 11. 2 CHEMICALS IN SOLUTION REACT AND AN INSOLUBLE SUBSTANCE IS FORMED
- 12. PROCESS OF DEPOSITING A LAYER OF ZINC ON IRON
- 13. BUBBLES IN A SODA CAN DUE TO THE PRESENCE OF CARBON-DIOXIDE
Down
- 1. WHEN A COMPOUND IS FORMED FROM ITS ELEMENTS OR FROM SIMPLER SUBSTANCES
- 2. REACTIONS IN WHICH HEAT IS ABSORBED
- 4. ORIGINAL SUBSTANCES PARTICIPATING IN A CHEMICAL REACTION
- 5. NEW SUBSTANCES FORMED DURING A CHEMICAL REACTION
- 10. OCCURS WHEN 2 SUBSTANCES REACT CHEMICALLY TO FORM NEW SUBSTANCES